Atmospheric valve.



UNITED STATES PatentedJanuary 31, 1905.

PATENT OFFICE.

GEORGE W. HAYDEN, OF CHICAGO, ILLINOIS, ASSIGNOR TO CRNE COM- PANY, OFCHICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS.

ATMOSPHERIC VALVE.

A SPECIFICATION forming part of Letters Patent No. 781,200, dated.January 31, 1905,

To @ZZ whonf it muy concern/:

Be it known that I, GEORGE W. HAYDEN, a citizen of the United States,residing at Chicago, in the State of Illinois, have invented certain newand useful Improvements in At mospheric Valves, of which the following.is a speciiication.

My invention relates to valves commonly used for outlets to theatmosphere, as through exhaust pipes and the like, and particularly tomeans for preventing excessive vibration or hammering and means formanually raising valve when desired, or adjusting its position 'l1carrying a piston upon its end.

with reference to its seat, to provide a superior valve casing, and togenerally improve and simplify the structure of atmospheric valves.These objects, together with advantages which will hereinafter appear, Iattain by means of the construction illustrated in pre'- ferred form intheaccompanying drawing, Whereinv Figure 1 is a central section vthroughthe valvecasing taken on line(1) in Figure 2, and

Figure 2 isa partial plan view and broken horizontal section along theline (2) in Figure 1, showing the internal construction and the meansfor moving the valve.

' In order to prevent the too sudden opening of the valve from impulsesin the steam pressure, and also to prevent sudden closing of the same incase the pressure is suddenly dropped, I provide, in the easing 5containing the valveI seat 6 and the valve 8, va spider or bracket.

12 which has attached to it a depending stem The valve disk 8 isprovided with a chamber 10, which surrounds the piston and fits looselythereon,

so that the movements of the valve 8 are dampened by means of theimprisoned air in l operating means.

l -Appiiaaniedmmh`9,1904.. serial No'. 197,357.

ing of suflcient size to remove the parts. This is closed by a cap 7 andupon thisI mount the lifting ringer 13, pivoted to a stud 14: andengaging some part of the chamber 10 or the valve. vThe lever 13 is madein bell-crank form and has an upwardly projecting arm which engages apin on the nut block or crossheadA 15.l This block is moved by means ofthe screw 16 which projects through the side of the cap 7 and isprovided with an operating handle.

In the ordinary course thevalve may rest looselyv upon its seat, land beraised by the steam pressure upon the under side; otherwise it may beraised or held up in any position desired by means of the lever 18. Thusthe valve may be manually openedfrom the outside and its distancefromits seat may be adjusted at pleasure by adjusting the position ofthe cross-head 15 upon said screw. -It will be observed that the plate 7closes an opening which is of sufficient size to remove the valve andits parts, and the spider 12,. and the plate 7 carries the lever withit. that by this arrangement I provide a straightaway valve opening andcasing and means operated from. the outside to adjust or lift the valvemanually when desired, and no bend in the pipe is required toaccommodate the valve The valve may be placed or removed withoutdisconnecting the pipe or removing a section, and there is nosubstantial obstruction of the exhaust passage.

Having thus described my invention and illustrated its use, what I claimas new, and

'desire tosecure by Letters Patent, is the following:

1. The combination of a valve casing having a straight-awa)7 openingtherethrough, of a valve to closesaid opening moving in the axis Aoflthe casing, dampening means for said valve detachably secured insidethe casing, a removable cap on the side of the casing, and

It will be noted means carried on said cap for manually raising thevalve from described. y

2. The combination wlth avalve easing havoutside, substantially as ing astraight-away'opening therein, a valve Closing the opening, a cylinderon the valve, and a piston operating in the cylinder and e removablespider Supporting the piston, sub-y stantially as described.

3. The combination with a valve easing and a valve therein havingdampening means for its movements, oi' a removable cap on the side ofthe easing and a screw and bell crank lever carried entirely on the capand adapted to manually operate the valve from outside, TO substantiallyas described.

ln testimony Wliereoic I have hereunder signed my name in the presenceof the two subscribed Witnesses.

GEORGE XV. HAYDEN. Witnesses:

PAUL CARPENTER, EDWARD C. BURNS.

